libapa...mdParms(3pm)

πŸ’– NAME πŸ’–

Apache2::CmdParms β€” Perl API for Apache command parameters object

okay so bestie, quick vibe check: this whole page lives in the User Contributed Perl Documentation corner of your manual, and the manual name is libapa...mdParms(3pm) (yes the name is literally abbreviated like that, we don't make the rules πŸ’…). Anyway. Let's get into it.


✨ Synopsis ✨

  use Apache2::CmdParms ();
  use Apache2::Module ();
  use Apache2::Const -compile => qw(NOT_IN_LOCATION);

  my @directives = (
    {
      name => 'MyDirective',
      cmd_data => 'some extra data',
    },
  );

  Apache2::Module::add(__PACKAGE__, \@directives);

  sub MyDirective {
      my ($self, $parms, $args) = @_;

      # push config
      $parms->add_config(['ServerTokens off']);

      # this command's command object
      $cmd = $parms->cmd;

      # check the current command's context
      $error = $parms->check_cmd_context(Apache2::Const::NOT_IN_LOCATION);

      # this command's context
      $context = $parms->context;

      # this command's directive object
      $directive = $parms->directive;

      # the extra information passed thru cmd_data to
      # Apache2::Module::add()
      $info = $parms->info;

      # which methods are <Limit>ed ?
      $is_limited = $parms->method_is_limited('GET');

      # which allow-override bits are set
      $override = $parms->override;

      # which Options are allowed by AllowOverride (since Apache 2.2)
      $override = $parms->override_opts;

      # the path this command is being invoked in
      $path = $parms->path;

      # this command's pool
      $p = $parms->pool;

      # this command's configuration time pool
      $p = $parms->temp_pool;
  }

Like. Look at that. Full little tour of the whole API in one subroutine. We love a one-stop-shop moment 🫢


🌸 Description 🌸

Apache2::CmdParms provides the Perl API for Apache command parameters object. That's it, that's the whole thesis. It's the lil' bundle of ✨everything✨ that gets handed to your directive handler so you can peek at the command, the context, the path, the pools, all of it.


πŸ‘‘ API πŸ‘‘

Apache2::CmdParms provides the following functions and/or methods:

πŸ“ add_config

Dynamically add Apache configuration at request processing runtime:

  $parms->add_config($lines);
  • obj: $parms ( Apache2::CmdParms object )
  • arg1: $lines (ARRAY ref) β€” an ARRAY reference where each element is one configuration line, without the new line terminators. ngl, don't sneak a \n in there, it's giving chaos.
  • ret: no return value
  • since: 2.0.00

See also: $s->add_config, $r->add_config


πŸ¦‹ check_cmd_context

Check the current command against a context bitmask of forbidden contexts. It's the bouncer at the club door πŸ’…

  $error = $parms->check_cmd_context($check);
  • obj: $parms ( Apache2::CmdParms object )
  • arg1: $check ( Apache2::Const :context constant ) β€” the context to check against.
  • ret: $error ( string / undef ) β€” if that context is forbidden, you get back a textual description of why it was forbidden. If it's permitted, you get undef. No notes, that's a slay.
  • since: 2.0.00

For example, here's how you check whether a command is allowed inside a <Location> container:

  use Apache2::Const -compile qw(NOT_IN_LOCATION);
  if (my $error = $parms->check_cmd_context(Apache2::Const::NOT_IN_LOCATION)) {
      die "directive ... not allowed in <Location> context"
  }

πŸŽ€ cmd

This module's command information

  $cmd = $parms->cmd();
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $cmd ( Apache2::Command object )
  • since: 2.0.00

🌈 directive

This command's directive object in the configuration tree

  $directive = $parms->directive;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $directive ( Apache2::Directive object ) β€” the current directive node in the configuration tree
  • since: 2.0.00

πŸ’œ info

The extra information passed through cmd_data in Apache2::Module::add(). It's like a lil' note you tuck into your directive's pocket 🫢

  $info = $parms->info;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $info ( string ) β€” the string passed in cmd_data
  • since: 2.0.00

For example, here's how you pass arbitrary information to a directive subroutine:

  my @directives = (
    {
      name => 'MyDirective1',
      func => \&MyDirective,
      cmd_data => 'One',
    },
    {
      name => 'MyDirective2',
      func => \&MyDirective,
      cmd_data => 'Two',
    },
  );
  Apache2::Module::add(__PACKAGE__, \@directives);

  sub MyDirective {
    my ($self, $parms, $args) = @_;
    my $info = $parms->info;
  }

In this example $info will either be 'One' or 'Two' depending on whether the directive was called as MyDirective1 or MyDirective2. Two directives, one handler, zero drama ✨


πŸ”₯ method_is_limited

Discover if a method is <Limit>ed in the current scope

  $is_limited = $parms->method_is_limited($method);
  • obj: $parms ( Apache2::CmdParms object )
  • arg1: $method (string) β€” the name of the method to check for
  • ret: $is_limited ( boolean )
  • since: 2.0.00

For example, to check if the GET method is being <Limit>ed in the current scope, do:

  if ($parms->method_is_limited('GET') {
      die "...";
  }

⭐ override

Which allow-override bits are set (the AllowOverride directive)

  $override = $parms->override;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $override ( bitmask ) β€” the allow-override bits bitmask, which can be tested against Apache2::Const :override constants.
  • since: 2.0.00

For example, to check that the AllowOverride's AuthConfig and FileInfo options are enabled for this command, do:

  use Apache2::Const -compile qw(:override);
  $wanted = Apache2::Const::OR_AUTHCFG | Apache2::Const::OR_FILEINFO;
  $masked = $parms->override & $wanted;
  unless ($wanted == $masked) {
      die "...";
  }

🧚 override_opts

Which options are allowed to be overridden by .htaccess files. This is set by AllowOverride Options=....

  $override_opts = $parms->override_opts;

Enabling single options was introduced with Apache 2.2. For Apache 2.0 this function simply returns a bitmask with all options allowed. (Apache 2.0 said "you get everything, no cap" πŸŽ€)

  • obj: $parms ( Apache2::CmdParms object )
  • ret: $override_opts ( bitmask ) β€” the bitmask, which can be tested against Apache2::Const :options constants.
  • since: 2.0.3

🌸 path

The current pathname/location/match of the block this command is in

  $path = $parms->path;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $path ( string / undef ) β€” if configuring for a block like <Location>, <LocationMatch>, <Directory>, etc., the pathname part of that directive. Otherwise undef is returned. Yes bestie, sometimes the answer is just undef, and that's valid πŸ’€
  • since: 2.0.00

For example, for a container block:

  <Location /foo>
  ...
  </Location>

'/foo' will be returned.


πŸ’– pool

Pool associated with this command

  $p = $parms->pool;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $p ( APR::Pool object )
  • since: 2.0.00

✨ server

The (vhost) server this command was defined in httpd.conf

  $s = $parms->server;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $s ( Apache2::Server object )
  • since: 2.0.00

πŸ¦‹ temp_pool

Pool for scratch memory; persists during configuration, but destroyed before the first request is served.

  $temp_pool = $parms->temp_pool;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $temp_pool ( APR::Pool object )
  • since: 2.0.00
⚠️ Most likely you shouldn't use this pool object, unless you know what you are doing. Use $parms->pool instead. fr fr, this one's a temporary situationship β€” it's gone before the first request even shows up 😭

πŸ™ˆ Unsupported API πŸ™ˆ

Apache2::CmdParms also provides auto-generated Perl interface for a few other methods which aren't tested at the moment and therefore their API is a subject to change. These methods will be finalized later as a need arises. If you want to rely on any of the following methods please contact the the mod_perl development mailing list so we can help each other take the steps necessary to shift the method to an officially supported API.

like, it's not off limits, it's just not finalized β€” proceed with main character confidence but read the fine print πŸ’…

πŸ“ context

Get context containing pointers to modules' per-dir config structures.

  $context = $parms->context;
  • obj: $parms ( Apache2::CmdParms object )
  • ret: $newval ( Apache2::ConfVector object ) β€” returns the commands' per-dir config structures
  • since: 2.0.00

πŸ’€ See Also πŸ’€

mod_perl 2.0 documentation.


mod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0.


πŸ‘‘ Authors πŸ‘‘

The mod_perl development team and numerous contributors.


and that's the whole page, bestie 🫢 you just read Apache2::CmdParms from the User Contributed Perl Documentation, and this version came from perl v5.42.3, dated 2026-08-20 β€” so if you're reading this from some other era, no cap, do a vibe check on your version. slay, go configure something iconic πŸ’…βœ¨πŸŒˆ

πŸ“¦ where this page comes from